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Recent content by amith.srivatsa

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    How DECT works, Technical information

    Hello everyone, Can you please give me the links to any website where I will find useful information of how a DECT works in detail (technical). I have already looked up Wikipedia. I need something in a little more detail. You could also send me E-Books, as PDF... Many thanks in advance, Amit...
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    Problem with PIC16F876A - LED Blink

    Hello guys, I am really stumped with this problem. Have been stuck with it for quite sometime now. I also have the capacitors across VDD & VSS, but still, doesnt work. Although the LED blinks promptly when powered using PIC KIT 2.
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    Problem with PIC16F876A - LED Blink

    Across VDD & VSS, I have given 4.5 V. It works for lower voltages too. The minimum voltage would be 2.5V - LED blinking at this voltage when powered across VDD & VSS of PIC KIT 2. But for programming i.e. to download the *.hex file onto the chip, we need a minimum of 4.5V.
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    Problem with PIC16F876A - LED Blink

    Yes, I have 4.6 volts across the output of the voltage regulator. Also, I tried to power up using a 5V battery, still no luck. But when connected to VDD & VSS of PIC KIT 2, still works...
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    Problem with PIC16F876A - LED Blink

    Hello, I am guessing I have narrowed down the problem to just something to do with power supply. I have the circuit on my board & when I just connect it to VDD & VSS in the PIC KIT 2, everything works, BUT; why is it not working with my battery ???
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    Problem with PIC16F876A - LED Blink

    Hello, Just now I have modified the following: (But still LED doesn't blink) #include <16F876A.H> #fuses HS,NOWDT, NOPROTECT, NOBROWNOUT, PUT,NOCPD,NOPUT,NOLVP #use delay(clock=8000000) //==================================== void main(){ while(1) { output_high(PIN_C5)...
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    Problem with PIC16F876A - LED Blink

    Hello everyone, I am still a beginner in Microcontroller programming. I want to make LED blink using a simple C code - using PIC16F876A, compiled in CCS. The code is: ##include <16F876A.H> #fuses HS,NOWDT, NOPROTECT, NOBROWNOUT, PUT,NOCPD,NOPUT #use delay(clock=1000000)...
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    Problem with Voltage rogulator

    convert 12vdc to 5vdc Hello all, I need to convert 12V DC to 5V DC. Current requirement can go upto 1.5A. I am currently using the L4940 which should support my requiement. The data sheet says 5V,1.5 A. I have mounted it on a breadboard. Unfortunately, I can see that its getting heated a lot...
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    Hex code, CCS compiler

    Dear all, I just changed from PIC16f690 to PIC16F876A. The PIC is used for motor driver application and it sends signals to the H-bridge VNH2SP30. The code written for PIC16f690 worked well with no errors. But now, I am getting some errors, mainly unknown keyword, unknown identifier when I...
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    Communication between 2 Trasceiver chips ?

    transceiver si4431 Hello everyone, I need to make a project to exchange a string between 2 transceiver chips. I have 2 sample chips from silicon labs - SI4431 - 433 MHz Transceiver. The chip has SPI interface. Can anyone guide me how I can do this ? I am new to this field. Many thanks in...
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    Testing with VNH2SP30 - pin converter to use in breadboard

    vnh2sp30 chip holder Hello everyone, I am currently designing a motor driver circuit using the H-bridge VNH2SP30. I am still in testing phase & so am using a breadboard. Any suggestions as to how I can test this extremely tiny chip - package is Multi-power SO - using a standard breadboard. Are...
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    Relative positioning system ?

    Yes, I forgot to mention an important parameter, the accuracy required is 1cm when the rover is not moving and about 300cms when the rover is moving. Also, the LOS of the transceivers is for 500m. I am a beginner, have no previous RF experience...For now, I am selecting a good 433MHz...
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    Relative positioning system ?

    Hello everyone, I am working on building a relative position system for a robot using 433 MHz transcivers. To measure the position of the robot,(................principle similar to GPS............) I intend to use an active device(433 Mhz transceiver) on the robot and 3 repeaters(433 Mhz...
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    I am looking for a low cost CPLD which supports I2C

    lattice i2c interface cpld Hello FvM, Thanks for the reply, Which CPLD would you recommend ? (How many macro cells should my CPLD have in order to implement I2C. Also, I need to implement & algorithm into my CPLD....)
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    I am looking for a low cost CPLD which supports I2C

    amith srivatsa cpld Hello guys, I am looking for a low cost CPLD which supports I2C. Any suggestions ? Thanks... Amit
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